74672641 has 4 divisors (see below), whose sum is σ = 78602800. Its totient is φ = 70742484.

The previous prime is 74672629. The next prime is 74672657. The reversal of 74672641 is 14627647.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74672641 - 2¹¹ = 74670593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74672641.

It is not an unprimeable number, because it can be changed into a prime (74672141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1965051 + ... + 1965088.

It is an arithmetic number, because the mean of its divisors is an integer number (19650700).

Almost surely, 2^74672641 is an apocalyptic number.

It is an amenable number.

74672641 is a deficient number, since it is larger than the sum of its proper divisors (3930159).

74672641 is a wasteful number, since it uses less digits than its factorization.

74672641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930158.

The product of its digits is 56448, while the sum is 37.

The square root of 74672641 is about 8641.3332883300. Note that the first 3 decimals coincide. The cubic root of 74672641 is about 421.1018705078.

The spelling of 74672641 in words is "seventy-four million, six hundred seventy-two thousand, six hundred forty-one".